{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "53e6242db8d60da0587d36951cc9434d1a1c21dd"
            },
            {
              "fixed": "2454264b2ab4cf0055c0bfd39e79f830452bd0db"
            },
            {
              "fixed": "d3e72cfef2e38bd588055739a8100d14f9773b17"
            },
            {
              "fixed": "8ac463fe6c0f85bdb1ce8c30e8c9e060802e4483"
            },
            {
              "fixed": "56add2b9b2e89ec61c0761165d758f73004fdfdf"
            },
            {
              "fixed": "91b3ecd34b60f950c50c560974945b6596a6f207"
            },
            {
              "fixed": "01feaf024f29618d5ffa7ab0fd858e0579dcbf7b"
            },
            {
              "fixed": "fcb21bf747640c9d6bd1eda9da85420f076d59c1"
            },
            {
              "fixed": "f8f680609c2b3ab795ffcd6f21585b6dfc46d395"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.3.0"
            },
            {
              "fixed": "5.10.261"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.212"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.178"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.145"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.96"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.39"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64347.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: composite: fix dead empty check in the USB_DT_OTG handler\n\nThe OTG branch of composite_setup() falls back to the first\nconfiguration when none is selected:\n\n\tif (cdev-\u003econfig)\n\t\tconfig = cdev-\u003econfig;\n\telse\n\t\tconfig = list_first_entry(\u0026cdev-\u003econfigs,\n\t\t\t\t\t  struct usb_configuration, list);\n\tif (!config)\n\t\tgoto done;\n\t...\n\tmemcpy(req-\u003ebuf, config-\u003edescriptors[0], value);\n\nlist_first_entry() never returns NULL. On an empty list it returns\ncontainer_of() of the list head. So the \"if (!config)\" check is dead.\n\nWhen cdev-\u003econfigs is empty, config points at the head inside struct\nusb_composite_dev. config-\u003edescriptors[0] reads whatever sits at that\noffset. The memcpy copies up to w_length bytes of it into the response\nbuffer.\n\ncdev-\u003econfigs can be empty in two cases. One is a teardown race on\ngadget unbind with a control transfer in flight. The other is a driver\nthat sets is_otg before it adds a config. A reproducer that holds\ncdev-\u003econfigs empty triggers a KASAN fault in this branch.\n\nUse list_first_entry_or_null() so the existing check does its job.",
  "id": "CVE-2026-64347",
  "modified": "2026-07-27T03:56:36.603630333Z",
  "published": "2026-07-25T08:50:08.338Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/01feaf024f29618d5ffa7ab0fd858e0579dcbf7b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2454264b2ab4cf0055c0bfd39e79f830452bd0db"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/56add2b9b2e89ec61c0761165d758f73004fdfdf"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8ac463fe6c0f85bdb1ce8c30e8c9e060802e4483"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/91b3ecd34b60f950c50c560974945b6596a6f207"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d3e72cfef2e38bd588055739a8100d14f9773b17"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f8f680609c2b3ab795ffcd6f21585b6dfc46d395"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fcb21bf747640c9d6bd1eda9da85420f076d59c1"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64347.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64347"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.8.0",
  "summary": "usb: gadget: composite: fix dead empty check in the USB_DT_OTG handler"
}